Enrhifo
25\left(5p-3q\right)^{2}-15p+2
Ehangu
625p^{2}-750pq-15p+225q^{2}+2
Rhannu
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625p^{2}-750pq+225q^{2}-\left(15p-2\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(25p-15q\right)^{2}.
625p^{2}-750pq+225q^{2}-15p+2
I ddod o hyd i wrthwyneb 15p-2, dewch o hyd i wrthwyneb pob term.
625p^{2}-750pq+225q^{2}-\left(15p-2\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(25p-15q\right)^{2}.
625p^{2}-750pq+225q^{2}-15p+2
I ddod o hyd i wrthwyneb 15p-2, dewch o hyd i wrthwyneb pob term.
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